It's not only balanced, but it almost feels like your fighting Sonic's evil twin brother!
The Sonic/Shadow Second battles are bosses in Sonic Adventure 2, The fight is either against Shadow (in the Hero Side of the Story) or Sonic (in the Dark Side of the Story) and are the eighth and final bosses of both the Hero and Dark Side of their respective Story Modes and the Eighth and Sixteenth Bosses Overall. Shadow: Before this is over, I'll show the true power of Chaos CONTROL!